Fluid coupling



March 11,. 1924.;

- 11,486,662 c. HAMILTON FLUID COUPLING Filed Juno 21. 1922 2 Sheets-Sheet l W ATTORNEY a fl March 1 1 1924.

C; HAMILTON FLUID COUPLING 2 Sheets-Sheet 2 Filed. Juno 21 1922 INVENTOR 02 5 @WLZZWK BY ATTORNEY atcnted er. ll, 1924.

NETE

FLUID COUPLING.

Application filed June 21, 1922.

To all whom it may concern:

Be it known that I, Cnennns HAMIL'MN, a citizen of the United States, and resident of New York city, borough or ldanhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Fluid Couplings, of which the following is a specification.

The object of my invention is to provide a coupling adapted to detachably connect a hose and a tubular member with a fluid tight connection therebetween, whereby fluid, such as air or steam, under high pressure may flow from said coupling to such member, and whereby the coupling may be readily detached from such member and reapplied thereto. One of the features of my invention is that the coupling may be detachably connected with the aforesaid tubular member when the latter is attached to a rock drill to supply the latter with air or "steam under pressure, and said coupling may be detached from said member and applied to a hollow or tubular drill to enable air or steam under pressure, and said coupling may be detached from said member and ap plied to a hollow or tubular drill to enable air or steam under pressure to be delivered through such drill to blow accumulated dust or other substances from the hole containing the drill to permit withdrawal of the drill from such hole.

My invention comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out inthe claims.

Reference is to be had to the accompanying drawings forming part hereof, wherein- Fig. 1 is a plan view of my improvement;

Fig. 2 is a section on line 2-2 in Fig. 1; FFig. 3 is a cross section on line 3-3 in ig. 2' 1 liig. 4= is a cross section on line 1-4 in s Fig. 5 is a side view, partly in section, showing the parts in position for assembling or disassembling, and

Fig. 6 is a detail side view of a tubular drill.

Similar numerals of reference indicate corresponding parts in the several views.

The numeral 1 indicates the main body of my improved coupling which is shown provided with a longitudlnal bore Qprefer- Serial No. 569,898.

ably made of two difierent diameters, the

portion 2 of said bore being of less diameter than the portion 2 of said bore. Between the portions 2, 2 is a recess 2 that is greater in diameter than the portions 2, 2 of said bore, whereby a seat or shoulder 3 for a washer 4i is provided, a shoulder 5 also engaging said washer whereby the latter is retained in piace. The washer 1 may be of leather or other suitable material and forced into the recess 2. Body 1 is provided with a threaded portion at 6 communicating with bore 2 at one end of the body, which threads are adapted for connection with a coupling on a hose to connect body 1 with a source of fluid pressure, as with an air tank, air compressor or steam supply. A tubular member 7 is adapted to enter the bore portion 2' of member 1 and to seat against washer elto make a tight fit therewith. Member 7 may be provided with threads 8 at its outer end to engage threads in a wall of a chest or other appropriate part of the casing of a rock drill or other machine to which fluid, such as air or steam, under pressure is to be delivered. Means are provided to rigidly and detachably retain the tubular member 7 in connection with body 1 to maintain a fluid tight fit at washer 4. I have shown a ring 9 loose on a nut-like member 10 that is provided with internal threads 1O engaging external threads 12 on body 1. The member 10 is provided with an annular shoulder 10 against which ring 9 bears, and at 11 is a ring mounted upon member 10 and shown provided with a set screw 12 to engage said body to retain ring 11 thereon. The construction described is such that member 10 may be rotated upon body 1 without rotation of ring member 9 which is retained loosely in position between shoulder 10* and ring 11. lhe ring member 9 is provided with projections 13 on opposite sides upon which a yoke-like bail 1a is swivelled by means of eyes 15 at one end of said bail. The opposite or free endof said bail is shown provided with a jaw, indicated in the form of a cross bar at 14 formed of the material of said bail. In the example illus trated the bail is made or" wire having later ally extended arms 14" spaced apart, from which extend arms 14: to the adjacent ends of bar 14*, providing a space between the spaced arms to receive member 7, whereby the bar 14* may rest upon said member in co-operation with an annular shoulder 7 b on said member, and the arms resist side movement of the bail. The bail 1 1 may be made of wire having two main side arms provided each with an eye 15, said wire being bent at the outer end of each such side arm to provide the arms 1 1 14 and the connecting bar 14:".

When the member 7 is within the bore of body 1 the yoke-like bail 1% maybe swung against the member 7, beyond its shoulder 7 to enable the arms 1d and the cross bar 14 to engage said shoulder, the nut 10 having been advanced sulliciently along body 1 for the purpose, and then said nut will be moved outwardly along the body to draw the parts 14, 141 of member 1 1 against shoulder 7 to force the inner end otmember 7 against washer or packing 1 to make a fluid tight fit thereat.

In order to retain the yoke-like bail 11 in set position against shoulder '7 of member 7 I provide a clip or stop 16 movably carried by body 1 to bear upon the side arms of bail 14. In the construction shown the clip 'or stop 16 has feet 16 at'opposite ends'to rest upon the side arms of bail 1 1 when said clip extends transversely respecting body 1, (Fig. 1), and to release said side arms when the clip extends longitudinally respecting body has illustrated in Fig. 5. Clip 16 is guided by a stud 17 extending from member 1, and spring 18"bears against said clip and "against a stop 19, shown in the form of a nut, on stud 17. The clip 16 is shown provided with a recess 16 in a projection 16 receiving stud 17 and spring 18, and a cap 20 is detachably secured on projection 16 to prevent dust entering "said recess. The clip may be pulled out'against the spring and rotated to engage or release the bail. The springsretards'the clip in set position.

When it is desired to connect thecoupling with member '7 the clip 16 is'released from bail 14, member "7 is slid into the bore "of body 1 the'bail is placed in connection with member 7 and its shoulder 7, and nut 10 is rotated to draw the bail against shoulder 7 to secure the inner end of member 7 against washer '4. The clip 16 is then re placed with its feet resting against bail 14. Fluid under pressure may then flow through the coupling to member 7 and thence .to the air or steam chest of a rock drill or other machine to which member 7 is attached.

One of the advantages of my invention is that coupling body 1 may be readily detached from member 7rby disconnectingbail 1 1 from said member and withdrawingbody 1 without requiring member '7 to be disconnected from said -chest. A. further importan't advantage is that body 1 may beattached to a tubular drill, such as illustrated in Fig. 6, for the purpose of blowing air or steam through the bore of said drill. The

drill 21,-which may be of any well-known or desired construction, is shown provided with a shoulder 21 similar in function in connection with my improvements to the shoulder 7 of member 7. In case it is desired to blow dust or other material from the hole in which the drill is located the body 1 of my improvement may be applied to the upper end or" the drill by inserting said drill end into the bore'of body 1 and attaching the bail 1a to shoulder 21 of the drill, in manner described with respect to member 7, to cause the adjacent end ofthe drillto be forced'against washer e to make a tight fit 'thereat.

and the like may be blown from such hole to release the drill.

I claim- 1. A-coupling comprising a body having a bore, means within saidbo're tote-operate with a tubular member "to make a ti ht fit therebetween, a bail upon the body a apted to cooperate with said member, andmeans co-operativ'e between the body and the bail to move the latter along the body while the bail engages the member to tighten and retain said member in connection with said body.

2. A coupling compr sing a. body having a bore adapted to receive 'a tubular member having a shoulder, means within the bore to cooperate with said member to make a tight fit therebetween, a bail movably carried "by the body and having a portion to engage the shoulder or said member, and means co operative'with said body and said bail for moving the latter along the body while the bailengages the member to tighten and retain said member in connection with the body.

3. A coupling comprising a body having a bore adapted to receive a tubular member having a shoulder, a washer within the bore to co-operate with said member, a bail having spaced side arms and means at one end to engage said shoulder, a ring journaled around the body and 'movably connected with said ball, and means to adjust said ring in the direction of the length of the body while the bail engages'the member and retain the ring in set position.

4:. A coupling comprising a body having a bore adapted to receive a tubular member having a shoulder, a washer within the bore to co-operate with said member, a bail having means at one end to engage said shoulder, a nut operative upon said body, a ring journaled on the nut, and means movably connecting the bail with said ring.

5. A coupling comprising a body having a bore adapted to receive a tubular member having a shoulder, means to effect a tight fit between said body and member, a nut upon said body, a ring journaled on the nut, means to retain the ring in operative position on the nut, and a bail having side arms pivotally connected with said ring, said ball having spaced arms and a cross bar therebetween at its end opposite the ring to cooperate with said shoulder.

6. A coupling comprising a body having a bore adapted to receive a tubular member having a shoulder, means to effect a tight fit between said body and member, a nut upon said body, a ring journaled on the nut, means to retain the ring in operative position on the nut, said ring having projections on opposite sides, and a bail having side arms provided with eyes journaled on said projections, said bail at the end opposite its eyes having a jaw to receive said member and engage its shoulder.

7 A coupling comprising a body having a bore to receive a tubular member, a bail movably carried by the body and having means to cooperate with said member, a clip carried by the body and provided with feet to engage the side arms of the bail, and means movably supporting the clip upon the body to permit the clip to release the bail.

8. A coupling comprising a body having a bore to receive a tubular member, a bail movably carried by the body and having means to co-operate with said member, a clip carried by the body and provided with feet to engage the side arms of the bail, a stud upon the body, said clip being movably supported by the stud, said stud having a stop, and a spring co-operative between said clip and stop to permit the clip to be adjusted with respect to the bail and out of co-action therewith.

9. A coupling as specified in claim 8 in which the clip has a projection provided with a recess receiving said spring, and a cap upon said projection to close said recess.

CHARLES HAMILTON. 

